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This paper concerns Directed Acyclic Graph task scheduling on parallel executors. The problem is solved using two new implementations of Tabu Search and genetic algorithm presented in the paper. A new approach to solution coding is also introduced and implemented in both metaheuristics algorithms. Results given by the algorithms are compared to those generated by greedy LPT and SS-FF algorithms; and...
IBM ILOG CPLEX Optimization Studio delivers advanced and complex optimization libraries that solve linear programming (LP) and related problems, e.g., mixed integer. Moreover, the optimization tool provides users with its Academic Research Edition, which is available for teaching and noncommercial research at no-charge. This paper describes the usage of CPLEX C++ API for solving linear problems and,...
High Performance Computing (HPC) architectures are being developed continually with an aim of achieving exascale capability by 2020. Processors that are being developed and used as nodes in HPC systems are Chip Multiprocessors (CMPs) with a number of cores. In this paper, we continue our effort towards a better processor allocation process. The Processor Allocator (PA) and Job Scheduler (JS) proposed...
This paper is dedicated to two seemingly different problems. The first one concerns information theory and the second one is connected to logic synthesis methods. The reason why these issues are considered together is the important task of the efficient representation of data in information systems and as well as in logic systems. An efficient algorithm to solve the task of attributes/arguments reduction...
Energy consumption in a Chip MultiProcessor (CMP) is one of the most important costs. It is related to design aspects such as thermal and power constrains. Besides efficient on-chip processing elements, a well-designed Processor Allocator (PA) and a Network-on-Chip (NoC) are also important factors in the energy budget of novel CMPs. In this paper, the authors propose an energy model for NoCs with...
With the opportunities and benefits offered by Chip Multiprocessors (CMPs), there are many challenges that need to be addressed in order to exploit the full potential of CMPs. Such aspects as parallel programs, interconnection design, cache arrangement and on-chip cores allocation become a limiting factor. To ensure validity of approaches and research, we propose an evaluation system for CMPs with...
Chip multiprocessors (CMPs) have become the primary approach to build high-performance microprocessors. Such systems require fast and efficient communication that can only be realized using network on chip (NoC), particularly for large systems. Allocation and management of on-chip processors are also important factors to achieve high efficiency. Designing processor allocator, job scheduler and NoC...
Recent technological developments have shown huge advances in semi-conductor based System on Chip (SoC). However, limitations of such technology has quickly become an obstacle for the fast and highly demanding development of general or application specific SoCs. Since research in semi-conductor devices has reached its saturation, researchers look for alternative solutions. Optical technology is emerging...
Optical technologies for recent computer networks should provide high performance, ability to easy expansion and ensuring greater data's safety. They are very popular and still very much under research. The paper concerns optical switching problem for broadcast, multicast and unicast traffic. Improvement of architecture represented by input-output matrix and broadcast-multicast matrix, which deals...
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